Planets - Tamara Hartson - Bog

Super Explorers take you deep into space to see the planets in our Solar System and beyond: - Our Solar System has 8 planets, 5 dwarf planets and many minor planets. - Most planets have at least one moon like Earth, but Jupiter has 69 moons and Saturn has 62! - The Sun's gravity keeps the planets in our Solar System circling around it. - Mercury is the closest planet to the sun; the temperature there is 117˚C (243˚F). - Neptune is the farthest planet from the sun; the temperature there is -216˚C (-357˚F). - Scientists think there may be extraterrestrial life on Enceladus, a moon of Saturn, because there may be liquid water under the surface!